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Writer's pictureKeith Pachulski

Navigating GDPR Compliance: A Guide for SMBs For the NIST 800-53 Framework



What is GDPR?

The General Data Protection Regulation (GDPR) is a data privacy and security law enacted by the European Union (EU) that came into effect on May 25, 2018. It aims to protect the personal data of EU citizens and residents, giving individuals more control over how their personal data is collected, processed, stored, and used. GDPR applies to all organizations, regardless of location, that handle personal data of individuals within the EU, making it a critical regulation for businesses worldwide.

GDPR introduces several key concepts, including data subject rights, lawful processing of personal data, data protection principles, and strict requirements for data security. Non-compliance can result in severe penalties, including fines of up to €20 million or 4% of the global annual turnover, whichever is higher.

Privacy and Security Controls Required for GDPR Compliance

For small and medium-sized businesses (SMBs) to comply with GDPR, a variety of privacy and security controls must be implemented. These controls ensure the proper handling of personal data and the safeguarding of this information against unauthorized access, loss, or breach.

Data Mapping and Inventory involves identifying and documenting all personal data collected, processed, and stored by the business. This includes understanding the data flow, storage locations, and any third-party processors involved. To implement this, a data inventory should be created that details the types of personal data, the purposes for which it is used, data retention periods, and data sharing practices.

Lawful Basis for Data Processing requires establishing a legal basis for collecting and processing personal data, such as consent, contract performance, legal obligations, vital interests, public tasks, or legitimate interests. Ensure that for each data processing activity, there is a documented lawful basis. Obtain explicit consent from individuals where necessary and provide clear information about data processing activities.

Data Subject Rights ensure mechanisms are in place to uphold the rights of individuals, including the right to access, rectify, erase, restrict processing, data portability, and object to processing. Implement processes to handle data subject requests promptly and establish a policy for handling these rights within the required timeframes.

Privacy Notices and Transparency require providing clear and transparent information to data subjects about how their personal data is processed. Update privacy notices and policies to include detailed information about data processing activities, including the purposes of processing, data retention periods, and data subject rights.

Data Protection by Design and Default means incorporating data protection principles into the design of business processes and systems that handle personal data. Integrate privacy features into products, services, and systems. Use data minimization, pseudonymization, and encryption to protect personal data.

Data Breach Response and Notification necessitate establishing procedures for detecting, reporting, and investigating personal data breaches. Develop a data breach response plan that includes processes for identifying breaches, assessing the impact, notifying affected individuals, and reporting to the appropriate Data Protection Authority (DPA) within 72 hours.


Data Protection Impact Assessments (DPIAs) involve conducting DPIAs for processing activities that are likely to result in high risks to the rights and freedoms of individuals. Identify processing activities that require DPIAs, assess the potential risks, and document the measures taken to mitigate these risks.


Data Processor and Third-Party Management ensures that third-party processors handling personal data on behalf of the business comply with GDPR. Establish Data Processing Agreements (DPAs) with third-party vendors, outlining their obligations to protect personal data and ensure they implement adequate security measures.


Security of Processing requires implementing appropriate technical and organizational measures to ensure the security of personal data. Implement controls such as data encryption, access controls, secure data storage, regular security testing, and employee training on data protection.


Data Retention and Deletion define data retention periods and implement processes to securely delete personal data when it is no longer needed. Establish a data retention policy and employ secure data deletion methods, such as data wiping or degaussing, to ensure the complete removal of personal data.


Using the NIST 800-53 Framework for Implementing GDPR Controls


The NIST 800-53 framework consists of a set of security and privacy controls across various control families that align with GDPR's requirements. By leveraging these controls, small and medium-sized businesses can establish a structured approach to implementing robust security and privacy measures for personal data protection. Here is an expanded overview of NIST 800-53 control families with overlapping controls that support GDPR compliance.


Access Control (AC): This control family focuses on limiting access to information systems and data, ensuring only authorized individuals have access to personal data. Controls include user identification and authentication, least privilege, role-based access control, and session management. These directly support GDPR's principle of data minimization by restricting access to personal data based on user roles and responsibilities, thereby reducing the risk of unauthorized access or data breaches.


Awareness and Training (AT): NIST 800-53 requires organizations to conduct regular training for personnel on security and privacy policies, including GDPR compliance. Awareness and training controls help employees understand their responsibilities regarding data protection, which aligns with GDPR's requirement for data processors to be aware of their obligations. Training programs should include topics such as data subject rights, data breach response, and secure handling of personal data.


Audit and Accountability (AU): This family involves monitoring, logging, and auditing access to personal data. It ensures that any access or modifications to personal data are logged and can be reviewed for unauthorized activities. GDPR requires organizations to maintain records of processing activities, and these controls facilitate the detection of data breaches and ensure accountability through the tracking of user activities and system events.


Security Assessment and Authorization (CA): The CA control family involves periodic assessment and authorization of information systems. Controls include regular security assessments, vulnerability assessments, and continuous monitoring to ensure that security measures remain effective. GDPR requires organizations to regularly evaluate the effectiveness of technical and organizational measures, making these controls crucial for ongoing compliance.


Configuration Management (CM): This family focuses on establishing secure configurations for information systems and controlling changes to those configurations. GDPR emphasizes data protection by design and by default, and configuration management controls support this by ensuring that systems handling personal data are securely configured, reducing the risk of unauthorized changes and vulnerabilities.


Contingency Planning (CP): Contingency planning controls involve preparing for, responding to, and recovering from incidents that impact the confidentiality, integrity, and availability of personal data. This aligns with GDPR's requirement for organizations to have plans in place to ensure business continuity and data recovery in the event of a data breach or system failure. These controls include backup and recovery procedures, disaster recovery planning, and data restoration capabilities.


Identification and Authentication (IA): These controls focus on verifying the identity of users and devices before granting access to systems and data. GDPR requires that access to personal data be restricted to authorized personnel. By implementing robust identification and authentication mechanisms, organizations can ensure that only authenticated and authorized users have access to sensitive personal data, reducing the risk of unauthorized access.


Incident Response (IR): Incident response controls guide organizations in detecting, analyzing, and responding to security incidents, including data breaches. GDPR mandates that data breaches be reported to the appropriate supervisory authority and affected individuals within specific timeframes. By implementing incident response controls, organizations can establish a structured approach to managing data breaches, ensuring swift and effective action to mitigate the impact of an incident.


Maintenance (MA): This control family includes procedures for maintaining and repairing information systems to ensure their security and integrity. While GDPR does not specifically mention system maintenance, ensuring that systems are regularly updated and maintained is essential for protecting personal data from vulnerabilities and ensuring the continued effectiveness of security measures.


Media Protection (MP): Media protection controls focus on safeguarding data stored on physical media, such as hard drives, USB drives, and backup tapes. GDPR requires the protection of personal data during storage and transmission. These controls ensure that data stored on physical media is encrypted, securely stored, and properly disposed of when no longer needed, preventing unauthorized access and data breaches.


Physical and Environmental Protection (PE): This family involves securing physical access to information systems and protecting the physical environment in which data is processed. GDPR requires the implementation of appropriate physical security measures to protect personal data. Controls in this family include restricting physical access to data centers, monitoring entry points, and implementing environmental controls to safeguard data against physical threats such as fire or natural disasters.


Planning (PL): Planning controls involve the development and documentation of security and privacy policies and procedures. GDPR requires organizations to establish data protection policies and practices. This family includes the development of security plans, privacy policies, and procedures for managing security and privacy risks, ensuring that all activities are conducted in accordance with GDPR requirements.


Program Management (PM): The PM family provides a foundation for implementing and managing security and privacy programs within the organization. GDPR requires organizations to demonstrate compliance with data protection principles and to implement appropriate technical and organizational measures. Controls in this family include the establishment of a data protection program, appointment of a Data Protection Officer (DPO), and the integration of privacy considerations into the organization's governance framework.


Personnel Security (PS): Personnel security controls ensure that employees, contractors, and third-party users are vetted, trained, and managed to protect personal data. GDPR requires organizations to ensure that individuals processing personal data are trustworthy and have received appropriate training. Controls include background checks, personnel training, and termination procedures to prevent unauthorized access to personal data.


Personally Identifiable Information Processing and Transparency (PII): This family is specifically designed to manage and protect personally identifiable information (PII). Controls in this family include consent management, data quality assurance, data retention, and data minimization. GDPR emphasizes the protection of PII and grants data subjects specific rights. Implementing these controls helps organizations manage PII responsibly, ensuring compliance with GDPR's requirements for data protection and transparency.


Risk Assessment (RA): Risk assessment controls involve identifying and assessing risks to personal data and implementing measures to mitigate those risks. GDPR requires organizations to conduct Data Protection Impact Assessments (DPIAs) for high-risk processing activities. These controls guide organizations in identifying potential threats to personal data, evaluating their impact, and implementing appropriate safeguards to mitigate those risks.


System and Communications Protection (SC): This family focuses on securing communications and information systems to protect personal data during processing and transmission. GDPR requires implementing technical measures such as encryption to protect personal data. SC controls include network security, data encryption, and secure communication channels to ensure the confidentiality and integrity of personal data.


System and Information Integrity (SI): System and information integrity controls are designed to protect information systems from malware, unauthorized changes, and security vulnerabilities. GDPR mandates the implementation of appropriate technical measures to safeguard personal data. SI controls include implementing anti-malware software, system monitoring, patch management, and ensuring that data is accurate and has not been tampered with.


By utilizing the NIST 800-53 framework, organizations can systematically implement security and privacy controls that align with GDPR requirements. This framework provides a set of controls across various domains, ensuring that personal data is protected throughout its lifecycle, from collection to storage, processing, and disposal.


Testing and Validating GDPR Controls


To ensure that the privacy and security controls are working as intended, SMBs must conduct regular testing and validation. This process involves evaluating the effectiveness of the implemented controls, identifying gaps, and making necessary improvements.

Internal audits involve conducting regular reviews of data protection policies, procedures, and practices. This includes assessing the data inventory, data subject request handling processes, data retention practices, and breach response plans. The goal is to verify compliance with GDPR requirements and the effectiveness of the controls in place. Non-compliance issues are identified, documented, and corrective actions are implemented.

Data Protection Impact Assessment (DPIA) reviews require periodically reviewing DPIAs to ensure ongoing compliance with GDPR. This involves examining the risk assessments conducted for high-risk processing activities and verifying the implementation of mitigation measures. Processing activities are then confirmed to comply with GDPR while addressing any new risks.


Vulnerability assessments and penetration testing should be performed regularly to identify security weaknesses in systems handling personal data. This includes testing the security of networks, applications, and databases to uncover vulnerabilities that could lead to unauthorized access to personal data. Fixes for identified vulnerabilities are implemented, verifying that security measures effectively protect personal data.


Data breach simulation exercises help test the organization’s response to data breaches. These exercises simulate a data breach scenario, evaluating the effectiveness of the breach response plan, including detection, containment, and notification procedures. This process assesses the organization's readiness to handle a data breach and identifies areas for improvement in the response plan.


Policy and procedure reviews are essential to ensure that data protection policies and procedures remain effective and aligned with GDPR. This involves evaluating the clarity, accessibility, and comprehensiveness of privacy notices, data processing agreements, and internal policies. Policies are then confirmed to reflect current processing activities and data protection practices.


Employee training and awareness programs involve conducting ongoing training for employees on data protection principles and GDPR compliance. Employee understanding of GDPR requirements is assessed through training assessments, quizzes, and awareness exercises. This ensures employees are aware of their responsibilities and are capable of adhering to data protection policies.


How We Can Assist


Compliance with GDPR can be complex, particularly for small and medium-sized businesses. Our team offers expert assistance through our Virtual Chief Information Security Officer (vCISO), Virtual Privacy Officer (vPO), and GRC (Governance, Risk, and Compliance) Readiness Assessment services. We can help your business navigate the intricacies of GDPR, implement the necessary privacy and security controls, and ensure ongoing compliance through regular assessments and testing.


Contact us today to learn how we can support your journey toward GDPR compliance and safeguard your business against the evolving landscape of data protection regulations.


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